What is aac?
What Is an AAC File?
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** What Is an AAC File? **
By Sam Costello, About.com Guide
*AAC* - Stands for Advanced Audio Coding. It's a type of digital audio file
and has been promoted as the successor to the once-dominant digital audio
filetype, MP3. AAC generally offers higher-quality sound than an MP3 while
using the same amount of disk space.
While AAC is often perceived as an proprietary Apple format, it was in fact
developed by a group of companies including AT&T Bell Labs, Dolby, Sony,
and Nokia. As a result of this, AAC files can be played on a range of
non-Apple devices, including the Microsoft Zune, Sony PlayStation 3 and
PSP, the Nintendo Wii, and mobile phones running Google's Android OS, among
-How AAC Works-
Like MP3, AAC is a lossy format, meaning that in order to compress
CD-quality audio files into smaller files suitable for transmission over
the Internet, some data that will not impact the listening experience of
the file is removed. As a result of the compression, though, AAC files do
not sound identical to CD-quality files.
Like MP3s, the quality of an AAC file is measured based on its bit rate,
rendered as kbps. Also like MP3, common bit rates for AAC files include 128
kbps, 192 kbps, and 256 kbps.
The reasons that AAC files produce better sounding files at the same size
than MP3s are very complex. To learn more of the details of this, read the
Wikipedia article on AAC.
-iTunes & AAC-
AAC is the the format of
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